%I A031780
%S A031780 211,214,382,385,393,436,457,487,501,511,524,526,553,559,581,614,657,716,
%T A031780 749,781,831,846,856,862,869,875,881,893,950,996,1002,1019,1046,1094,
%U A031780 1123,1132,1137,1169,1194,1234,1246,1266,1309,1334,1353,1359,1361,1372
%N A031780 Period of continued fraction for sqrt(n) contains exactly 12 ones.
%Y A031780 Sequence in context: A114442 A037272 A020365 this_sequence A036232 A064826 
               A136601
%Y A031780 Adjacent sequences: A031777 A031778 A031779 this_sequence A031781 A031782 
               A031783
%K A031780 nonn
%O A031780 1,1
%A A031780 David W. Wilson (davidwwilson(AT)comcast.net)